Porphyromonas Gingivalis and Alzheimer's Disease

Porphyromonas Gingivalis - a Responsible Pathogen in Alzheimer's Disease?

With this study the investigators would like to analyze the the role of periodontal disease and especially the role of Porphyromonas gingivalis in initiation and progression of Alzheimer's Disease.

Inclusion Criteria:

• age 40-70
• caucasian origin
• dementia (Alzheimer's or other dementia)
• cognitive healthy (need for spinal anesthesia)

Exclusion Criteria:

• use of antibiotics within las 6 months
• pregnancy
• another illness explaining the symptoms in a better way
• smoking (>10 cigarettes)
• patients who have a legal custodian